I'm a new Thunderbird user, I've decided to pick it up after changes in Yahoo Mail (so I'm open to suggestions of other mail clients too).
When I reply to an e-mail, I get the quoted text in a format=flowed style with borders:
If I reply in plain-text mode, I get the reply in the format I want:
(I assume the colors won't be sent and are just "syntax highlighting", right?) but I'd like to keep using HTML for features like inline images.
Is there any way I can get that same style of old-school quotes so I can write in bottom-posting format while still using HTML mode? If there is some template somewhere that I'd have to edit, I'd be ok with having to do that.
There's an official tutorial about that. "Quote colors" extension is no longer useful for newest versions, so one have to edit .css files by himself.
Also i'd also recommend taking a look at the similar question at askubuntu (Thundebird is cross-platform as well as its extensions)